Planooraph co



E. C. BOLD.

y ,SE-LFVLIFTING JACK. lAPfPLlcATmN HLED ris. 19. 191.9.

' Patented Sept. 9,1919.

4 SHEETSSHEET l.-

Il' IIL L WI TNESSES:

THB coLuMam DLANOQRAPI co., WASHINGTON, D. c

E. C. HOLD.

SELF LIETING JACK.

APPucATloN mm FEB. 19. 19m.

1,315,335. i Patenteasept. 9,1919.

4 SHEETS-SHEET 2.

INVENTOR.

4 'NSB coLUMBlA PLANnRAPH C0., WASHKNGTON. D. c.

E. ,C. ROLD.

SELF LIFTING JACK.

APPLICATION FILED rss. 19. 1919.

Patentedsept. 9,1919,

4 SHEETS-SHEET 3.

Edward '0 Jok- E. C. BOLD.

SELF LIFTING IAGK.

APPLICATION man FEB.19.1919.

. dag@ THE COLUMBIA PLANDGRAPH C0.. WASHING-NJN, D. c.

to the wayportioni 11b and the traction wheels 20 of the car descend theopposite slope of VVthe lriser block 21, ,the carkis leftsuspended'above the floor by means of` its front and rear aXles restingupon the upper surface of thecarriage. f The position of the car andcarriage relative to each other just before' the descent of thecar'wheels from the riser block is illustrated in Fig. 2. s Y krWhen vitis desiredl next to use thecar, the operation is reversed-until the'lcarand cary riage'occupy the;positionv shown inV Fig. 1

after which 'the 'car may be backed out of the 1 garageffjree of thecarriage.` If during the l5V l itorw'ai'dV movement Vof the' car thewheels QOcleared the riser block'to such an extent aiordnotractiomfthecarriage with its' load ,4 a may bepuSlied backward lslightly until thewheels 2Q Vengage the lblock or, iny some cases,

as i to`A be n out of contact 'therewith and thus it may be foundvdesirable to have the riser bloeks21, moyableso that they can be shovedforward into c'ontactwith the wheels under suchcircuinstances The riserblocks 21 may.

alsog be' substitiited,iV Yth,ugh.l less advantageonsly, providing'a'depressionin' the 'ga-v rage Hoor: cQlTQSpOnding to the; 'forwarddownward l.slope of ri'serfblocks.V

lthecase of some makes o'-cars', vthe rear axlerisfprovi'ded withltru'ssrods Yas indiy catedgenerally atr23 in Fig. 4; in which case aguardie,requiredfor interposition between the axle and, carriage,l inorder to protect such rods. Y 1n ,such cases7` I provide Jforattachin'ent toxftherear axlelaguardV such as that shown in Fig.V 6. Thetrough-like meniber. 2li havingfside flangesv 25 is inadeto -v underliethefa'Xle, and is securedthereto by Y means l'of hangerA members27having flanges 28 to overlie'theanges :25. A housing for Y the'itruss,rods 23is Aprovided as indicated at Y29A the' same'rha'ving 'outturnedflanges 30 'underlying the tlangesQj andEZS, the whole 'beingA assembledby. means `of boltsl. When Iin place on therearvaxile'at both sides ofthe vcenterline of the car, thehousingQQA serves totransniit the weightof the car to the side Vifrariles 14 of thecarriage.; This is clearlyshownin Fig. tof the drawing; i

Y In Fig. 5 of the drawing is shown a slight modification wherein Ytheytimbers V13 are so formedy as. to` provide two ways 11 on each YFigures.

side of the'guard rail 12. This is in order to enable the vemployment oftwo carriage wheels 32 on each side of the center line of the carinstead of one as in the previous and 11fr are provided connecting theportions 11a, 11b and 11, the concave .portions 11d and 11e being abruptat the right hand end and of -gradual slope at the left hand end, whilethe portion 11f is more abrupt at the left hand end and gradual at theright hand, a peak being presented at the junction points of the concaveportions 11e and 11i from which said portions slope away by a gradualdescent. n

The entering car, as in the former case, is guided astride the carriagewhich latter occupies the` position shown in Fig. 7 of the drawings. Inthis position the front and rear axles of the car clear the lupper sur yface or top of the carriage, but as the car proceedsl under its ownpower the front axle 19 strikes the abutment 18, as before, and pushesthe' carriage with it, the front wheels of the carriage climbing fromthe way surface 11e to the peak between 11e and 11f. and clearing thefloor. During this forwardinovenient of the car, the drive wheels 20,nconta'ct with the Hoor,- cause the rear wheels 17 'of the carriage toclimb the incline 11d and at the time the front wheels of the carriagehave reached the peak between f11e" and l1f the rear `wheels of thecarriage have not quite reached the hori zontalrportion 11b of the ways.This position of the car is shown in dot and dash lines in Fig. 7. Thefront wheels 17 of the carriage now pass over the peak onto the concaveportion 11i and gravity acting by means of this sharper decline assistedby the momentum of the car advances the car riage to a position withtherear wheels on lthe horizontal portion 111.J and with the drive wheelsof the car clear of the floor. Further, the momentum of the car assistedby the incline 11f carries thecarriage forward, its front wheels 17ascending the leit hand portion of the incline 11f, where it is broughtto rest in the position shown in Fig. 8, and there held by theengagement of the detent lever 33 with the axle 16er' the forwardcarriage wheels.

.It willthus be s een that the carriage and the supported car are heldin the position shown 1n Fig. 8 against their natural inclination to runto the right under the influence of gravity. Both wheels of the car areclear of the floor. When it is desired to again use the car, the ownermerely presses upon the tail 311 of the detent lever with his foot,releasing the engagement between said detent and the carriage aXle,whereupon the weight of the carriage and its load traveling down theleft hand incline of the way surface 11f brings the rear carriage wheel17 onto the incline 11d which, in turn, carries the front carriage wheel17 ove]` the peak between 11e andllf, and the further descent of. thecarriage ony the inclines 11d and 11 bring the drive wheels of the carin contact with the floor. Thereupon the car proceeds under its ownpowerfree of the li ing device and outo'f the garage..

tion with large cars andwhere such a permanent attachment to the car iis not desired, Iequipthe carriage of my `improved elevating device withmeans fo-rinterposition between the carriage and axle, whereby the rearaxle is supported independently of the truss rods, such supports beingmovable from an inoperative to an operative position automatically asthe ear entersfupon and leaves the carriage.` Such deviceis shown.

in Figs. 9 and 10 of the drawing in detail.

` At the rearendof each ofthe side mem# bers 1'4`of the carriagespivoted at 35a swinging pedestal or support 36 the head of whichcarries a laterally projecting nose 37.

rlhe pedestal 36 has anoffset lug orprojec- Ation 38 forming a pointofconnectionby meansdf the'pivot39 with a link 40 the oppositeendofwhich is pivoted at 41 to the arm 42 of a lever fulcrumed at 43.The opposits end 44v of this lever is bifurcated to provide a slot 45within which plays a cross rod 46. Likewise pivoted atthe point 89 is afreely swinging arm 47, the lowerend of which is provided at 48 with ahooked portion and at 49 with a cam face. l v

lt will be understood that the mechanism just described is mounted inwduplicate upon the two sides of 'the carriage atthe rear end.

As the car enters the garageand proceeds under its power toa positionastride the carriage, the parts of the rear axle supporting mechanismoccupy the position shown in Fig. 9. They'continueto occupythis position`until the` front .axle of the car strikes the abutment 18. "Thereafter,the carriage itself moves forward and, in doing so,""the"` relativeposition of the axle 16 of the car'- riage and the cross rod 46 xed uponthe ways 13 changes. The cross rod 46 acting upon thebifurcated leverand through the link 40 upon the pedestal 36, swings the latter to theposition shown in Fig. 10, the nose 37 entering between the rear axle ofthe ear 22 and the truss rod 23. During this movement, the face 49 ofthe swinging arm, 47 rides off the axle 16 of the carriage and engagesthe hooked portion 48 in ifront of said axle as shown in Fig. 10, thuslocking the pedestal 36 in its elevated position as will clearly beseen. The continued forward movement of the car and `with it thecarriage causes the gradual lifting of the latter as its wheels 17ascend the incline as previously described, bringing the head of thepedestal left and thus swinging by means of the link `illustrated inFig. 9,\thus leaving the car form -of the abutment for the forward `axle364 in contact with the lower side lof 1the Irear `axle 212 lifting therear wheels" ofWthecar 40 the pedestal 36 to its prone position as 80free to continue itsrearward movement clear of the carriage.

` In Fig. 11, is shown a slightly modified previously shown anddescribed, the distinguishing feature of which is' that this abutment18a`has stepped operating surfaces 1S" and 18s, the former coming intoplay in connectionwith shorter cars having lower front axles-and thelatter in the case of longer cars having a" higher fro-ntaxle. Thisabutment, moreover, is adjustable lengthwise of the carriage torenderthe same `further adaptableto various sizes of cars.` i

"A selfliftingjaclrfor cars comprising ways progressivelyelevated, jawheeled car riage mounted thereon and having a length in excess of thewheel base of the car with which it is adapted to be used, said carriageadapted to be straddled by the car and having side frame membersunderlying the car axle," and an abutment at the front end` of thecarriage for engagement with the front 4105 axle of the car, the heightof the carriage so proportioned that when on the lower portions of theways the car axle willl clear the same but not the abutment `and thatwhen `on the more elevated portions ofthe waysfthe car' axle will `reston the carriage iwithf the wheels clear of the floor, the dif` ferentelevations ofthe ways comprising a horizontal portion, a concave portionat the rear thereof and two concave portions of different depths with anintermediate peak at the front thereof, the several portions soproportioned that the `traction wheels of the car will force the frontwheels of the `carriage to an elevation with the front astop@ andmaintain` itat rest on thev last mentioned incline, wherebyvwhenreleased the carriage with its load/'Will descend by gravity to alower elevation with the car traction wheels ineontact withothe floor.

2. 'Av Selig-liftingv jaclrfor cars comprising V- IOOfressivel 1elevated wa s a wheeled carr-ioagemounted thereon including side mein- Y'bers arranged to underlie the front and rear axlefof the, carganabutment on the carriage at the :trent end adapted to be engaged byu thefront axle of the ear, a pedestal on the r carriage at the rear endvadapted to; J'be-interposed betweenr the Carriage and the; rear axle-ofthe car by the relative movement of* theY carriage v and ways, theheight voffthe'earriage soy proportioneel that when on the lower portionof the Ways the car axle will elear the samerbut not the abutment ,andthat lwhen on` the more elevated portion of the ways the front axlerwillrest on the carriagel framerand the rear axle'on e the pedestal with thewheels clear of the 31A self-lifting jack for cars comprisingprogressively elevated ways., a wheeled car- Y riage Vmounted thereonineludingside memy gaged by the front axle of the ear, a pedestal bersarranged to underlie the front and rear axle of the car,l an abutment ontheearriage 'at' the front end adapted Vto be ention of thefways the earaxle will clear the same but not theabutment and that when onthefmoreelevated portion of the ways vthe front axle will restY on thecarriage frame andthe rear axle on the-pedestal with'the wheels clearofthe floor. c

Ll. A self-lifting acl; for cars comprising progressively elevated ways,a wheeled earriage mounted thereon including side members arranged tounderlie the front and rear axle of the car, an abutment on the carriageat thej front end adapted to be engaged by thev front axle of the car, asupporting pedestal at the rear end of the carriage arranged Vforinterposition between the carriage and therrear axle of the car, theheight of the carriage so proportioned that when on the lower portionol' the ways the front axle will clear the carriage but not theVabutment and the rear axle will clear the pedestal and that when on themore elevated portion of the ways the axles will rest on thel carriageand on the pedestal respectively with the wheels clear of the floor,said pedestalr comprising a pair of members each liavino' a nose aortionand aiv- 23 oted to the carriage at each side of the longitudinal centerto swing from a prone inoperative position toA anrupright; operativeposition with the nose portion projected beneath the rear axleo the car,and means for automatically operating said pedestal Comprising abifurcated lever ulcrumed on the `carriage with one arm linked to' thepedestal and the bifurcated arm arranged to engage with a stationary rodon the ways when descending said ways, and a swinging rocking armpivoted to the pedestal and arranged to engage over the axle of thecarriage'to hold the pedestal in upright position and to be disengagedtherefrom to release the pedestal when the carriage descends the ways.

In testimony whereof I have hereunto signed my naine in the presence oftwo subscribing witnesses.

EDW'ARD CHARLES ROLD.

Witnesses:

L. T. Gmns'r, MARY C. BROWER;

VGenies orf this patent may. be obtained forve @ents eachibyA addressingtheGommissioner of Ifatents,

- 1 Y 'Washingtom D. Q.

It is hereby certified vthat in Letters Patent No. 1,315,335, grantedSeptember 9, 1919, upon the application of Edward C.Ro1d, of Oakville,Iowa, for an improve ment in Self-Lifting Jacks, errors appearv in theprinted speoieation requiring correction as follows: Page 3, line 122,claim 1, strike out the comme; same page and claim, line 123, strike outthe word to; and that the said Letters Patent should be read with thesecorrections therein that the same may conform to the record of the casein the Patent Oce.

Signed and sealed this 28th day of October, A. D., 1919.

[SEAL] M. H. COULSTON,

Acting Commissioner of Patents. Cl. 254-88.

